What makes something alive ?

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What makes something alive ?
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What are living things?
There are certain criteria that determine if
something is living.
Yes, ALL 7 criteria must be met.
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Organism

• Anything that possesses all of the following
  characteristics of life.
• Living things R-CHARGEED !!

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R -
eproduce
All living things produce offspring. Making
copies of individuals by genetic transfer,
sexually or asexually.
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C -
ells
-Living organisms show an orderly structure
(made up of cells)
Examples
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H -
omeostasis
The ability to maintain internal conditions
separate from an outside environment.
Example
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A -
dapt to the environment
R -
espond to stimuli
A living organism will respond to an
environmental condition called a stimulus.
An adaptation is any characteristic of an
organism that improves its chances of surviving
in its environment
A plant growing in a specific direction due to a
light stimulus.
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G -
rowth
D -
evelopment

• Getting Bigger / Increasing material
• All of the changes that take place during the
  life of an organism. Maturing.

Growth rings in a tree
Amoeba absorbing nutrients
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E -
energy
Metabolism. Chemical and energy transformations.
All organisms need energy for all life
activities. Even thinking requires a
considerable amount of energy.
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E -
evolve
The gradual accumulation of adaptations due to
environmental stimuli. (Organisms with more
suitable adaptations are more likely to survive
and reproduce)
Example
Owls, and other nocturnal animals have evolved
large eyes for better night vision.
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Allright lets see how well you paid attention

• Review the lab findings

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Classify the crayfish

1. Alive
2. Dead but once alive
3. Never alive
4. Product of a living thing

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How did you know???
14
Classify the fish

1. Alive
2. Dead but once alive
3. Never alive
4. Product of a living thing

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How did you know???
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Classify the conch shell

1. Alive
2. Dead but once alive
3. Never alive
4. Product of a living thing

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Classify the fetal pig

1. Alive
2. Dead but once alive
3. Never alive
4. Product of a living thing

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How did you know???
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Classify Herb

1. Alive
2. Dead but once alive
3. Never alive
4. Product of a living thing

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How did you know???
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Classify Yogurt

1. Alive
2. Dead but once alive
3. Never alive
4. Product of a living thing

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Classify the beans

1. Alive
2. Dead but once alive
3. Never alive
4. Product of a living thing

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Classify the wood block

1. Alive
2. Dead but once alive
3. Never alive
4. Product of a living thing

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Classify the rock

1. Alive
2. Dead but once alive
3. Never alive
4. Product of a living thing

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Classify the burning candle

1. Alive
2. Dead but once alive
3. Never alive
4. Product of a living thing

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How did you know???
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Classify the egg

1. Alive
2. Dead but once alive
3. Never alive
4. Product of a living thing

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Classify the cotton

1. Alive
2. Dead but once alive
3. Never alive
4. Product of a living thing

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How many characteristics of life must an organism
possess to be considered alive?

1. 1
2. 3
3. 5
4. 2 and a half
5. All of them

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All of the following are characteristics of life
except

1. Organized
2. Grow and Develop
3. Adapt
4. Maintain internal conditions
5. Move
6. Reproduce

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Which of the following characteristics of life
are not required for an organism to survive but
instead to ensure survival of an entire species?

1. Organized
2. Grow and Develop
3. Adapt
4. Maintain internal conditions
5. Move
6. Reproduce

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How are living things organized?
There are various levels of organization
and get bigger.
Lets start small
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1) Atoms
Atoms are the smallest unit of matter that have
the chemical properties of a particular element.
Examples
Carbon, Hydrogen, Oxygen
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2) Molecules
Molecules that are the small building blocks from
which larger molecules are made.
Examples
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3) Macromolecules
Large molecules consisting of many subunits.
Examples
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4) Organelles
Specialized structures inside of a cell.
Examples
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5) Cells
The smallest unit of biological organization that
biologists consider alive.
Example
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6) Tissue
A group of distinct and similar cells that carry
out a specific set of functions.
Examples
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7) Organ
Groups of tissues organized together to carry out
a particular set of functions.
Examples
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8) Organ System
Groups of organs that function together to carry
out broad sets of functions.
Example
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9) Organism (or individual)
Individual that has its own distinct existence as
a complex, reproducing unit.
Examples
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10) Population
Group of freely interacting and breeding
individuals of the same species.
Examples
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11) Community
Populations of different species living and
interacting together in a distinct area.
Example
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12) Ecosystem
Distinguishable groups of species and the abiotic
(non-living) components of the environment with
which the living creatures interact.
Examples
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13.) Biome

• Geographically defined area based on climate and
  environmental conditions.

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14.) Biosphere

• Im sure you can figure this one out!